Confusing error message

I restarted a job I created a time ago. Now I get

Please wait, syncing <rsync://admin@pi-nas.kingma/media> to </pool0/archive/media/> ...

receiving incremental file list
rsync: [sender] link_stat "." (in media) failed: Permission denied (13)

sent 8 bytes received 84 bytes 184.00 bytes/sec
total size is 0 speedup is 0.00
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1865) [Receiver=3.2.7]
rsync: [Receiver] read error: Connection reset by peer (104)
ERROR: The synchronisation failed.

Where is the problem? at the source (another OMV installation with module available) or the destination the local OMV.

I've not change any rights

I had moved the folder in the sorce to a different location, changed the rsync module. Didn't realize that in between the acl had changed.